Java中的EnumMap get()方法

爪哇。util。地图。得到( 对象键 )方法用于给出指定键的映射值。

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语法:

get(Object key)

参数: 该方法采用一个参数 钥匙 它被传递以返回与之关联的值。

返回值: 它返回与相关键映射的值。

下面的程序说明了get()函数的工作原理:

项目1:

// Java program to demonstrate get(key)
import java.util.*;
// An enum of geeksforgeeks
public enum gfg {
Global,
India
}
;
class Enum_demo {
public static void main(String[] args)
{
EnumMap<gfg, Integer> mp = new
EnumMap<gfg, Integer>(gfg. class );
// Values are associated
mp.put(gfg.Global, 800 );
mp.put(gfg.India, 72 );
// Stores the value mapped with the key specified
int res = mp.get(gfg.India);
// Prints the result
System.out.println( "GeeksforGeeks ranked in India: "
+ res);
}
}


输出:

GeeksforGeeks ranked in India: 72

项目2:

// Java program to demonstrate get(key)
import java.util.*;
// An enum of geeksforgeeks
public enum gfg {
India,
United_States,
China
}
;
class Enum_demo {
public static void main(String[] args)
{
EnumMap<gfg, String> mp = new
EnumMap<gfg, String>(gfg. class );
// Values are associated
mp.put(gfg.India, "61.7%" );
mp.put(gfg.United_States, "18.2%" );
mp.put(gfg.China, "2.5%" );
// Stores the value mapped with the key specified
String res = mp.get(gfg.United_States);
// Prints the result
System.out.println( "Visitors in United_States: "
+ res);
}
}


输出:

Visitors in United_States: 18.2%

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